<template>
  <view class="cart-container" v-if="cart.length !== 0">
    <!-- 收获地址组件 -->
    <my-address></my-address>
    <!-- 商品列表的标题部分 -->
    <view class="cart-title">
      <!-- 左侧的图标 -->
      <uni-icons type="shop" size="18"></uni-icons>
      <!-- 右侧的文本 -->
      <text class="cart-title-text">购物车</text>
    </view>

    <!-- 商品列表区域 -->
    <!-- uni-swipe-action 是最外层包裹性质的容器 -->
    <uni-swipe-action>
      <block v-for="(goods, index) in cart" :key="index">
        <!-- uni-swipe-action-item 可以为其子节点提供滑动操作的效果。需要通过 options 属性来指定操作按钮的配置信息 -->
        <uni-swipe-action-item :options="options" @click="swipeActionClickHandler(goods)">
          <my-goods :goods="goods" :show-radio="true" :show-num="true" @radio-change="radioClickHandler"
            @num-change="numberChangeHandler"></my-goods>
        </uni-swipe-action-item>
      </block>
    </uni-swipe-action>

    <!-- 结算组件 -->
    <my-settle></my-settle>
  </view>

  <!-- 购物车 -->
  <view class="empty-cart" v-else>
    <image src="../../static/cart_empty@2x.png" class="empty-img"></image>
    <text class="tip-text">空空如也~</text>
  </view>
</template>

<script>
  import badgeMix from '@/mixins/tabbar-badge.js'
  import {
    mapState,
    mapGetters,
    mapMutations
  } from 'vuex'
  export default {
    mixins: [badgeMix],
    data() {
      return {
        options: [{
          text: '删除',
          style: {
            backgroundColor: '#C00000' // 按钮的背景颜色
          }
        }]
      };
    },
    computed: {
      ...mapState('m_cart', ['cart']),

    },
    methods: {
      ...mapMutations('m_cart', ['updateGoodsState', 'updateGoodsCount', 'removeGoodsById']),
      radioClickHandler(e) {
        this.updateGoodsState(e)
      },
      numberChangeHandler(e) {
        this.updateGoodsCount(e)
      },
      swipeActionClickHandler(goods) {
        this.removeGoodsById(goods.goods_id)
      }
    }
  }
</script>

<style lang="scss">
  .cart-container {
    padding-bottom: 100rpx;

    .cart-title {
      height: 80rpx;
      display: flex;
      align-items: center;
      padding-left: 10rpx;
      border-bottom: 2rpx solid #efefef;

      .cart-title-text {
        font-size: 28rpx;
        margin-left: 20rpx;
      }
    }
  }

  .empty-cart {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding-top: 300rpx;

    .empty-img {
      width: 180rpx;
      height: 180rpx;
    }

    .tip-text {
      font-size: 24rpx;
      color: gray;
      margin-top: 30rpx;
    }
  }
</style>
